package main
import(
	"fmt"
	"math/big"
)

func main(){
   
	 a:=big.NewInt(86400)
	 fmt.Println(a)
     fmt.Printf("%T\n",a)
	 b:=new(big.Int)
	 b.SetString("86400",10)
	 fmt.Println(b)
     fmt.Printf("%T\n",b)
     
	 //go语言不会给常量进行类型推断
	 const c = 100e20
	 fmt.Println(c)
	 fmt.Printf("%T\n",c)

	 var d int =1e18
	 fmt.Println(d)
	 fmt.Printf("%T\n",d)

}